102050521 has 2 divisors, whose sum is σ = 102050522. Its totient is φ = 102050520.

The previous prime is 102050519. The next prime is 102050549. The reversal of 102050521 is 125050201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92833225 + 9217296 = 9635^2 + 3036^2 .

It is an emirp because it is prime and its reverse (125050201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102050521 - 2¹ = 102050519 is a prime.

Together with 102050519, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 102050495 and 102050504.

It is not a weakly prime, because it can be changed into another prime (102050591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51025260 + 51025261.

It is an arithmetic number, because the mean of its divisors is an integer number (51025261).

Almost surely, 2^102050521 is an apocalyptic number.

It is an amenable number.

102050521 is a deficient number, since it is larger than the sum of its proper divisors (1).

102050521 is an equidigital number, since it uses as much as digits as its factorization.

102050521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 102050521 is about 10102.0057909308. The cubic root of 102050521 is about 467.3100008611.

The spelling of 102050521 in words is "one hundred two million, fifty thousand, five hundred twenty-one".